iDigBio.org
GBIF.org
iNaturalist.org
NANFA
FishNet 2
USGS NAS| HUC Code | Watershed Name | Occurrence | Source |
| 17110005 | Upper Skagit | Current | NatureServe |
| 17110006 | Sauk | Historic | NatureServe |
| 17110008 | Stillaguamish | Current | NatureServe |
| 17110011 | Snohomish | Current | NatureServe |
| 17110017 | Skokomish | Current | NatureServe |
| 17110018 | Hood Canal | Historic | NatureServe |
| 17110019 | Puget Sound | Historic | NatureServe |